Hydrocarbon-burner.



No. 756,796. PATENTED APR. 5, 1904.

B. A. MOODY.

m HYDROGARBON BURNER. APPLICATION rmm mm. as. 1901. nmmwnn 001*. '1.1903. no MODEL. t 2 sums-sum 1.

O- G 0 90 000 0 0 OOOOOOOO OOOOOOO OOOOOOOO (3000000 00000000 O O O O OO O 00000 No. 756,796. PATENTBD APR. 5, 1904. B. A. MOODY.

HYDROGARBONBURNER.

APPLICATION FILED MAR. 33. 1901. nznnwnn 00121, 1903.

N0 MODEL.

2 SHEETS-SHEET 2.

WITNESSE- J'Jp V UNITED STATES Patented April 5, 1904.

PATENT OFFICE.

BENJAMIN A. MOODY, OF WEST ROXBURY, MASSACHUSETTS, ASSIGNOR TO THE B. A.MOODY HYDRO-CARBON BURNER COMPANY, OF PORT- LAND, MAINE, A CORPORATION.

HYDRQCARBON-BURNER.

SPECIFICATION forming part of Letters Patent No. 756,796, dated April 5,1904.

Application filed March 23, 1901. Renewed October 7, 1903. Serial No.176,154. (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN A. MOODY, of West Roxbury, in the county ofSufiolk and State of Massachusetts, have invented certain 5 new anduseful Improvements in Hydrocarbon-Burners, of which the following is aspecification.

This invention is an improvement upon that set forth in Letters Patentof the United I States No. 387,799, dated August 14, 1888,

and relates to furnaces using liquid hydrocarbon as fuel. The inventionset forth in said patent had for its object the insuring of a perfectcombustion of the fuel and the provision of efficient means forregulating the flow of the hydrocarbon,so that the heat might becontrolled. The burner shown in said patent comprises a casing havingoil and steam chambers with their discharging-passages converging 2 intoone elongated orifice and a sliding valve seated partly in said orificeand forming two independent contracted outlets at an angle to eachother, one of which orifices is controlled by the valve, the outer endof which forms 2 5 one wall of the oil-orifices. The valve forms thebottom portion of the steam-chamber, and the steam in said chamberimpinges upon the valve and is liable to find its way under the same,and thus leak into the oil-chamber, caus- 3 ing back pressure thereinand preventing the oil which flows by gravity to the point of combustionfrom reaching said point.

The present invention has for its object to provide simple and efiicientmeans for pre- 3 5 venting the leakage of steam below the valve and intothe oil-chamber, thus obviating the objection above noted and greatlycontributing to the effectiveness of the burner.

The invention consists in the improvements 4 which I shall now proceedto describe and claim.

Of the accompanying drawings, Figure 1 represents a sectional elevationof a boilerfurnace to which my improved burner is ap- 4 5 plied. Fig. 2represents a section on line 2 2 of Fig. 1. Fig. 3 represents a sectionon line 3 3 of Fig. 1 and is a plan view of the burner below said line.Fig. 4: represents an enlarged plan view, partly in section, of theburner shown in Fig. 3. Fig. 5 represents a section on line 5 5 of Fig.4:. Fig. 6 represents a section on line 6 6 of Fig. 5. Fig. 7 representsa section on line 7 7 of Fig. 5. Fig. 8 represents a section on line 8 8of Fig. 5. Fig. 9 is a perspective view illustrating the means forregulating the valves of the steam and oil supply pipes.

On the drawings, A represents a portion of a boiler, and B representsthe fire-box under the same.

C represents a superheater of any ordinary construction adapted tosuperheat the steam required by the hydrocarbon-burner hereinafterdescribed, said superheater being arranged as shown and described in theabovementioned patent, except that it is inclosed in a casing F,preferably fire-brick, arranged in front of the bridge-wall G.

H represents a fire-brick wall extending from the casing F to the boilerand composed of bricks arranged to form spaces, as shown in Figs. 1 and2. Said wall is arranged so that the flame from the burner impingesagainst it or its lowest portion, the bricks composing the wall beinghighly heated, so that their surfaces facilitate the consumption of theproducts of combustion, and thus increase the effectiveness of theburner.

E represents the burner, which is contained in an opening in the frontwall of the fire-box and is of the same general construction asillustrated in the above-mentioned patentthat is to say, as here shown,particularly in Figs. 4 and 5, the burner consists of an irregularcasting 23, having a chamber 22, closed by a plate 24, that communicateswith the steam-supply pipe 20. This steam-chamber of the burnergradually tapers down to its mouth 2, the width of the chamber remainingunchanged, so that the steam will issue therefrom in a fine jet, but ofconsiderable width. The casting 23 also provides a second chamber 25 ofsmaller dimensions closed by a cap 26, that is connected by a pipe 27with the liquid-hydrocarbon reservoir or tank, (not shown,) which shouldbe supported sufficiently is also contracted toward its mouth 3, that isarranged just beyond the mouth 2 of the steam-chamber and preferably theslightest degree lower than said last-named mouth. The extent of openingof the mouth 3 of the oil-chamber is regulated by a valve 28, that ismovable in guides in the sides of the steamchamber 22, the stem 29whereof extends through a portion of the steam-supply pipe and astufiEing-box 30 and is operated by a lever or other handle 31. The endof the upper face of this valve 28 provides one side of the mouth 2,'andits end also provides one side of the mouth 3. The oil-chamber mouth 3may be raised or lowered with respect to the mouth 2 to vary the effectof the jet of steam passing over said mouth 3 by adjusting the positionof the cap 26 through its attachingscrews, so that its flat horizontalface t, which is at substantially right angles to the oil-orifice andsituated below and in line with the steam-orifice, is approached towardor from the said jet of steam. The quantity of oil rising to the levelof the face I will be regulated to a nicety by adjusting laterally theposition of the valve 28, so as to vary the size of the mouth 3.

The casting 23 is made hollow below the rear portion of the valve 28 toform a chamber 32, adapted to receive a mass of packing material 33. Thebottom of the rear portion of the packing-chamber is substantiallyparallel with the under side of the valve 28, and in,

this portion is a follower 34, which extends entirely across the chamber33 and is in height equal to the space between the rear portion of thebottom of the chamber and the valve 28, so that when the follower isforced forward it confines and compresses the packing in the forwardpart of the chamber 33. The follower is backed by screws 35, whichenable it to be moved forward to compress the packing. The front end ofthe follower and the forward portion of the bottom of the chamber 32 arepreferably inclined, the inclines being arranged as shown in Fig. 5, sothat when the follower is moved forward the inclines will force thepacking upwardly and hold it closely against the bottom of the valve,thus preventing leakage of steam under the valve and its entrance intothe oil-chamber 25. This provision for the exclusion of steam from theoil-chamber is one of great importance. In my former patent abovementioned I have shown a narrow recess in the casting 23 under the valvefor the reception of packing material and a screw arranged to bear onone end of the mass of packing and compress it by a movement crosswiseof the movement of the valve, so that when the packing was compressed itwas shortened crosswise of the Valve and a gap was formed at one end ofthe packing through which steam found its way to the oil-chamber. wereprovided for pressing the packing upwardly against the valve.

The described improvement comprising the packing-chamber and thefollower movable in the direction of movement of the valve, so that asthe packing is compressed it is crowded outwardly against the sides ofthe casing, is an important improvement over my prior construction. Theinclines on the follower and the bottom of the packing-chamber whichcause an upward pressure of the packing against the valve are alsoimportant, it being very essential that the leakage of steam under thevalve be prevented, for if such leakage occurs the pressure of the steamin the oil-chamber 25 is liable to force the oil backwardly from themouth 3, particularly when the oil-reservoir is located at a relativelylow point, so that the pressure due to the height of the reservoir isrelatively light. In practice, especially on locomotives, it isdesirable to locate the oil-reservoir about three feet above the mouth3, and the pressure of oil caused by this elevation would beinsufiicient to overcome the pressure of steam leaking into the chamber25 under the valve.

The operation is as follows: Steam admitted to the chamber 22 issues inthe form of a jet from the burner-mouth 2 and is prevented by thepacking 33 from gaining access to the chamber 25 below the mouth 3. Theoil is therefore permitted to rise to the upper end of the mouth 3 andto flow upon the face 4 in the form of a thin film. The jet of steamstriking the face 4 will take up oil spread thereon and carry it in theform of spray against the heated refractory material of the wall H. Theflame of the burning hydrocarbon speedily brings the refractory materialto a red heat and then to incandescence, the heat therefrom soongenerating steam in the boiler A.

In Fig. 9 I show means, such as are shown and described in the patentabove mentioned, for controlling the valves in the steam and oil supplypipes by an attendant located, for example, in the cab of a locomotive.

I claim 1. A hydrocarbon-burner consisting of a casing having steam andoil chambers with their discharge-passages converging into a singleorifice, a sliding valve situated partly in said orifice and cooperatingwith the walls of said orifice to form two independent contractedoutlets one for steam and the other for oil, a packing-chamber undersaid valve, and means extending entirely across the chamber and acrossthe path of movement of the valve for applying pressure to a mass ofpacking in the chamber to press the same simultaneously against bothsides of the chamber.

2. A hydrocarbon-burner consisting of a casing having steam and oilchambers with their discharge-passages converging into a Moreover, nomeans.

vsene single orifice, a sliding valve situated partly in said orificeand cooperating with the walls of said orifice to form two independentcontracted outlets one for steam and the other for oil, apacking-chamber under said valve, and means for applying pressure to amass of packing in the chamber to press the same upwardly against thevalve across the entire width thereof.

3. A hydrocarbon-burner consisting of a casing having steam and oilchambers with their discharge-passages converging into a single orifice,a sliding valve situated partly in said orifice and cooperating with thewalls of said orifice to form two independent contracted outlets one forsteam and the other for oil, a packing-chamber under said valve, andmeans for applying pressure to a mass of packingin the chamber to pressthe same simultaneously against the sides of the chamber and the entirewidth of the under side of the valve.

4. A hydrocarbon-burner consisting of a casing having steam and oilchambers With their discharge-passages converging into a Single orifice,a sliding valve situated partly in said orifice and cooperating with thewalls of said orifice to form two independent contracted outlets one forsteam and the other for oil, a packing-chamber under said valve,and apacking compressor or follower movable in the direction of movement ofthe valve toward and from the oil-outlet whereby the packing may becompressed and expanded crosswise of the casing.

5. A hydrocarbon-burner consisting of a casing having steam and oilchambers with their discharge -passages converging into a singleorifice, a sliding valve situated partly in said orifice and cooperatingwith the Walls of said orifice to form two independent contractedoutlets one for steam and the other for oil, a packing-chamber undersaid valve, and a packing compressor or follower movable in thedirection of movement of the valve toward and from the oil-outletwhereby the packing may be compressed and expanded crosswise of thecasing, said follower having an inclined end arranged to press thepacking against the valve.

6. A hydrocarbon-burner consisting of a casing having steam and oilchambers with their discharge-passages converging into a single orifice,a sliding valve situated partly in said orifice and cooperating with thewalls of said orifice to form two independent contracted outlets one forsteam and the other for oil, a packing-chamber under said valve havingthe forward portion of its lower surface inclined, and a packingcompressor or follower movable in the direction of movement of thevalve, and adapted to expand the packing crosswise of the casing.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

BENJAMIN A. MOQDY.

Witnesses:

C. F. BROWN, A. 1). HARRIsoN.

